On the dependence of solar flare X-ray spectral line intensity ratios of highly ionized sulfur, calcium, and iron on electron temperature, differential emission measure, and atomic physics
1990; IOP Publishing; Volume: 358; Linguagem: Inglês
10.1086/169019
ISSN1538-4357
AutoresG. A. Doschek, A. Fludra, R. D. Bentley, J. Lang, K. J. H. Phillips, Takayuki Watanabe,
Tópico(s)Calibration and Measurement Techniques
Resumoview Abstract Citations (17) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the Dependence of Solar Flare X-Ray Spectral Line Intensity Ratios of Highly Ionized Sulfur, Calcium, and Iron on Electron Temperature, Differential Emission Measure, and Atomic Physics Doschek, G. A. ; Fludra, A. ; Bentley, R. D. ; Lang, J. ; Phillips, K. J. H. ; Watanabe, T. Abstract This paper focuses on what can be learned about the emission measure distribution and certain atomic physics parameters from spectral lines of highly ionized ions of sulfur, calcium, and iron that appear in solar flare spectra. The particular lines chosen for analysis allow the electron temperature to be determined independently of the assumption of ionization equilibrium. An attempt is made to find emission measure models based on selected functional dependences of emission measure on temperature that reproduce the observed temperatures deduced from spectral line ratios as well as the relative intensities of resonance lines of different elements. Publication: The Astrophysical Journal Pub Date: August 1990 DOI: 10.1086/169019 Bibcode: 1990ApJ...358..665D Keywords: Line Spectra; Radiant Flux Density; Solar Flares; Thermal Plasmas; X Ray Spectra; Calcium; Electron Energy; Emission Spectra; Iron; Sulfur; Solar Physics; SUN: FLARES; SUN: X-RAYS; X-RAYS: SPECTRA full text sources ADS |
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